561151265 has 8 divisors (see below), whose sum is σ = 675943488. Its totient is φ = 447213040.

The previous prime is 561151259. The next prime is 561151267. The reversal of 561151265 is 562151165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 561151265 - 2¹⁴ = 561134881 is a prime.

It is a super-2 number, since 2×561151265² = 629781484422200450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561151267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212051 + ... + 214680.

It is an arithmetic number, because the mean of its divisors is an integer number (84492936).

Almost surely, 2^561151265 is an apocalyptic number.

It is an amenable number.

561151265 is a deficient number, since it is larger than the sum of its proper divisors (114792223).

561151265 is a wasteful number, since it uses less digits than its factorization.

561151265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426999.

The product of its digits is 9000, while the sum is 32.

The square root of 561151265 is about 23688.6315560861. The cubic root of 561151265 is about 824.8215175572.

The spelling of 561151265 in words is "five hundred sixty-one million, one hundred fifty-one thousand, two hundred sixty-five".